The angular distance between a point on the Earth's surface and the equator, using the center of the Earth as the vertex. It differs from geodetic latitude in that it accounts for the ellipsoidal shape of the Earth rather than considering it as a perfect sphere. Compare geodetic latitude.
What Does “Winter Solstice” Mean?The winter solstice lasts for just one moment. It occurs exactly when the Earth’s axial tilt is farthest away from the sun. This usually happens around December 21 or 22 in the Northern Hemisphere or June 20 or 21 in the Southern Hemisphere. If you’re in the Northern Hemisphere, during the solstice the sun will be at its southernmost point in the sky. The higher …
How To Be Less Forgetful And Remember EverythingWhat are mnemonics? Whether or not you loved school, there are several fictitious figures you should thank for your education. Your Dear Aunt Sally, for example, as well as your Very Educated (or Excited, Eccentric, Elephantine) Mother, and Roy G. Biv. Also, be grateful that All Cows Eat Grass; those cows saved your ‘rhymes-with-grass’ in music class. Has this collection of relatives and cows sent you …
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.